1. Baker, S. B., and Davey, D. G. (1970): The predictive value for man of toxicological tests of drugs in laboratory animals. Br. med. Bull. 26, 208–211.
2. Batstone, G. F., Blair, A. W., and Slater, J. M. (1972): A handbook of prenatal paediatrics for obstetricians and paediatricians. J. B. Lippincott Company, Philadelphia and Toronto.
3. Brent, R. L. (1972): Protecting the public from teratogenic and mutagenic hazards. J. Clin. Pharmacol. 12, 61–70.
4. Brown, G. C. (1970): Maternal virus infection and congenital anomalies. Arch. Environ. Health 21, 362–365.
5. Bulova, S., Schwartz, E., and Harrer, W. V. (1972): Hydrops fetalis and congenital syphilis. Pediatrics 49, 285–287.